Is there a global for the number of page of category pages?

I want to set the html.title and html.description with data from the first link that is shown on a page:

1. Red cars in Cleveland
2. Green cars in Detroit
....
25.

Then red cars should be set for the html.title of the page in header.

26. Yellow Cabs
27. Lalal
...
50
Yello Cabs should be used

So i need a global to fetch the data from the first link inside a category page.
For this i should know the page number. Then i can calculate and fetch the right link, right?